API SP test oil on an engine that doesn’t have timing chain issues. ACEA C5 is a stain in grade that Carries manufacturer spec such as MB 229.71, VW 508/509 Porsche C30, etc. I’d be more worried about fuel dilution than timing chain wear and LSPI which Honda engines don’t have anyway. The X2 has a higher HTHS than the Toyota 0w20. Everywhere outside of USA uses ACEA C3 oil from 0w30 to 15w40. Honda recommends 0w20 strictly for fuel efficiency. I wouldn’t even be using a 0w20 in any engine anyway.You would be paying X2 or X3 for Mobil 1 X2 0W-20 with no scientifically measurable performance difference—X2 indeed.
Moreover, I don't think they have upgraded Mobil 1 X2 0W-20 to API SP yet; so, it does not offer LSPI and timing-chain-wear protection.